Home / 129,515,523.43-178,731,889.14-70,778,195.50

Finding the Fourth Proportional to 129,515,523.43, 178,731,889.14 and 70,778,195.50

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Solution

The fourth proportional to 129,515,523.43, 178,731,889.14 and 70,778,195.50 is: 97,674,164.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,515,523.43 : 178,731,889.14 = 70,778,195.50 : x
  2. Step 2: Convert to fraction form
    129,515,523.43/178,731,889.14 = 70,778,195.50/x
  3. Step 3: Cross multiply
    129,515,523.43x = 178,731,889.14 × 70,778,195.50
  4. Step 4: Simplify right side
    129,515,523.43x = 12,650,320,591,635,246
  5. Step 5: Solve for x
    x = 12,650,320,591,635,246/129,515,523.43
  6. Step 6: Final answer
    x = 97,674,164.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.